Dental Which one of the following is not a normal anatomical feature of mandibular incisors? A Bifurcated roots. B Inconspicuous cingula. C Four developmental lobes. D Incisal edges placed slightly lingually. 💡 Explanation Which one of the following is not a normal anatomical feature of mandibular incisors? ✓ Correct Answer: A. Bifurcated roots.